<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="generator" content="rustdoc">
<meta name="description" content="Source to the Rust file `/Users/travis/.cargo/registry/src/github.com-1ecc6299db9ec823/quote-0.3.15/src/lib.rs`.">
<meta name="keywords" content="rust, rustlang, rust-lang">
<title>lib.rs.html -- source</title>
<link rel="stylesheet" type="text/css" href="../../normalize.css">
<link rel="stylesheet" type="text/css" href="../../rustdoc.css" id="mainThemeStyle">
<link rel="stylesheet" type="text/css" href="../../dark.css">
<link rel="stylesheet" type="text/css" href="../../main.css" id="themeStyle">
<script src="../../storage.js"></script>
</head>
<body class="rustdoc source">
<!--[if lte IE 8]>
<div class="warning">
This old browser is unsupported and will most likely display funky
things.
</div>
<![endif]-->
<nav class="sidebar">
<div class="sidebar-menu">☰</div>
</nav>
<div class="theme-picker">
<button id="theme-picker" aria-label="Pick another theme!">
<img src="../../brush.svg" width="18" alt="Pick another theme!">
</button>
<div id="theme-choices"></div>
</div>
<script src="../../theme.js"></script>
<nav class="sub">
<form class="search-form js-only">
<div class="search-container">
<input class="search-input" name="search"
autocomplete="off"
placeholder="Click or press ‘S’ to search, ‘?’ for more options…"
type="search">
</div>
</form>
</nav>
<section id='main' class="content"><pre class="line-numbers"><span id="1"> 1</span>
<span id="2"> 2</span>
<span id="3"> 3</span>
<span id="4"> 4</span>
<span id="5"> 5</span>
<span id="6"> 6</span>
<span id="7"> 7</span>
<span id="8"> 8</span>
<span id="9"> 9</span>
<span id="10"> 10</span>
<span id="11"> 11</span>
<span id="12"> 12</span>
<span id="13"> 13</span>
<span id="14"> 14</span>
<span id="15"> 15</span>
<span id="16"> 16</span>
<span id="17"> 17</span>
<span id="18"> 18</span>
<span id="19"> 19</span>
<span id="20"> 20</span>
<span id="21"> 21</span>
<span id="22"> 22</span>
<span id="23"> 23</span>
<span id="24"> 24</span>
<span id="25"> 25</span>
<span id="26"> 26</span>
<span id="27"> 27</span>
<span id="28"> 28</span>
<span id="29"> 29</span>
<span id="30"> 30</span>
<span id="31"> 31</span>
<span id="32"> 32</span>
<span id="33"> 33</span>
<span id="34"> 34</span>
<span id="35"> 35</span>
<span id="36"> 36</span>
<span id="37"> 37</span>
<span id="38"> 38</span>
<span id="39"> 39</span>
<span id="40"> 40</span>
<span id="41"> 41</span>
<span id="42"> 42</span>
<span id="43"> 43</span>
<span id="44"> 44</span>
<span id="45"> 45</span>
<span id="46"> 46</span>
<span id="47"> 47</span>
<span id="48"> 48</span>
<span id="49"> 49</span>
<span id="50"> 50</span>
<span id="51"> 51</span>
<span id="52"> 52</span>
<span id="53"> 53</span>
<span id="54"> 54</span>
<span id="55"> 55</span>
<span id="56"> 56</span>
<span id="57"> 57</span>
<span id="58"> 58</span>
<span id="59"> 59</span>
<span id="60"> 60</span>
<span id="61"> 61</span>
<span id="62"> 62</span>
<span id="63"> 63</span>
<span id="64"> 64</span>
<span id="65"> 65</span>
<span id="66"> 66</span>
<span id="67"> 67</span>
<span id="68"> 68</span>
<span id="69"> 69</span>
<span id="70"> 70</span>
<span id="71"> 71</span>
<span id="72"> 72</span>
<span id="73"> 73</span>
<span id="74"> 74</span>
<span id="75"> 75</span>
<span id="76"> 76</span>
<span id="77"> 77</span>
<span id="78"> 78</span>
<span id="79"> 79</span>
<span id="80"> 80</span>
<span id="81"> 81</span>
<span id="82"> 82</span>
<span id="83"> 83</span>
<span id="84"> 84</span>
<span id="85"> 85</span>
<span id="86"> 86</span>
<span id="87"> 87</span>
<span id="88"> 88</span>
<span id="89"> 89</span>
<span id="90"> 90</span>
<span id="91"> 91</span>
<span id="92"> 92</span>
<span id="93"> 93</span>
<span id="94"> 94</span>
<span id="95"> 95</span>
<span id="96"> 96</span>
<span id="97"> 97</span>
<span id="98"> 98</span>
<span id="99"> 99</span>
<span id="100">100</span>
<span id="101">101</span>
<span id="102">102</span>
<span id="103">103</span>
<span id="104">104</span>
<span id="105">105</span>
<span id="106">106</span>
<span id="107">107</span>
<span id="108">108</span>
<span id="109">109</span>
<span id="110">110</span>
<span id="111">111</span>
<span id="112">112</span>
<span id="113">113</span>
<span id="114">114</span>
<span id="115">115</span>
<span id="116">116</span>
<span id="117">117</span>
<span id="118">118</span>
<span id="119">119</span>
<span id="120">120</span>
<span id="121">121</span>
<span id="122">122</span>
<span id="123">123</span>
<span id="124">124</span>
<span id="125">125</span>
<span id="126">126</span>
<span id="127">127</span>
<span id="128">128</span>
<span id="129">129</span>
<span id="130">130</span>
<span id="131">131</span>
<span id="132">132</span>
<span id="133">133</span>
<span id="134">134</span>
<span id="135">135</span>
<span id="136">136</span>
<span id="137">137</span>
<span id="138">138</span>
<span id="139">139</span>
<span id="140">140</span>
<span id="141">141</span>
<span id="142">142</span>
<span id="143">143</span>
<span id="144">144</span>
<span id="145">145</span>
<span id="146">146</span>
<span id="147">147</span>
<span id="148">148</span>
<span id="149">149</span>
<span id="150">150</span>
<span id="151">151</span>
<span id="152">152</span>
<span id="153">153</span>
<span id="154">154</span>
<span id="155">155</span>
<span id="156">156</span>
<span id="157">157</span>
<span id="158">158</span>
<span id="159">159</span>
<span id="160">160</span>
<span id="161">161</span>
<span id="162">162</span>
<span id="163">163</span>
<span id="164">164</span>
<span id="165">165</span>
<span id="166">166</span>
<span id="167">167</span>
<span id="168">168</span>
<span id="169">169</span>
<span id="170">170</span>
<span id="171">171</span>
<span id="172">172</span>
<span id="173">173</span>
<span id="174">174</span>
<span id="175">175</span>
<span id="176">176</span>
<span id="177">177</span>
<span id="178">178</span>
<span id="179">179</span>
<span id="180">180</span>
<span id="181">181</span>
<span id="182">182</span>
<span id="183">183</span>
<span id="184">184</span>
<span id="185">185</span>
<span id="186">186</span>
<span id="187">187</span>
<span id="188">188</span>
<span id="189">189</span>
<span id="190">190</span>
<span id="191">191</span>
<span id="192">192</span>
<span id="193">193</span>
<span id="194">194</span>
<span id="195">195</span>
<span id="196">196</span>
<span id="197">197</span>
<span id="198">198</span>
<span id="199">199</span>
<span id="200">200</span>
<span id="201">201</span>
<span id="202">202</span>
<span id="203">203</span>
<span id="204">204</span>
<span id="205">205</span>
<span id="206">206</span>
<span id="207">207</span>
<span id="208">208</span>
<span id="209">209</span>
<span id="210">210</span>
<span id="211">211</span>
<span id="212">212</span>
<span id="213">213</span>
<span id="214">214</span>
<span id="215">215</span>
<span id="216">216</span>
<span id="217">217</span>
<span id="218">218</span>
<span id="219">219</span>
<span id="220">220</span>
<span id="221">221</span>
<span id="222">222</span>
<span id="223">223</span>
<span id="224">224</span>
<span id="225">225</span>
<span id="226">226</span>
<span id="227">227</span>
<span id="228">228</span>
<span id="229">229</span>
<span id="230">230</span>
<span id="231">231</span>
<span id="232">232</span>
<span id="233">233</span>
<span id="234">234</span>
<span id="235">235</span>
<span id="236">236</span>
<span id="237">237</span>
<span id="238">238</span>
<span id="239">239</span>
<span id="240">240</span>
<span id="241">241</span>
<span id="242">242</span>
<span id="243">243</span>
<span id="244">244</span>
<span id="245">245</span>
<span id="246">246</span>
<span id="247">247</span>
<span id="248">248</span>
<span id="249">249</span>
<span id="250">250</span>
<span id="251">251</span>
<span id="252">252</span>
</pre><pre class="rust ">
<span class="doccomment">//! Quasi-quoting without a Syntex dependency, intended for use with [Macros</span>
<span class="doccomment">//! 1.1](https://github.com/rust-lang/rfcs/blob/master/text/1681-macros-1.1.md).</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! ```toml</span>
<span class="doccomment">//! [dependencies]</span>
<span class="doccomment">//! quote = "0.3"</span>
<span class="doccomment">//! ```</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! ```rust,ignore</span>
<span class="doccomment">//! #[macro_use]</span>
<span class="doccomment">//! extern crate quote;</span>
<span class="doccomment">//! ```</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! Interpolation is done with `#var`:</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! ```text</span>
<span class="doccomment">//! let tokens = quote! {</span>
<span class="doccomment">//! struct SerializeWith #generics #where_clause {</span>
<span class="doccomment">//! value: &'a #field_ty,</span>
<span class="doccomment">//! phantom: ::std::marker::PhantomData<#item_ty>,</span>
<span class="doccomment">//! }</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! impl #generics serde::Serialize for SerializeWith #generics #where_clause {</span>
<span class="doccomment">//! fn serialize<S>(&self, s: &mut S) -> Result<(), S::Error></span>
<span class="doccomment">//! where S: serde::Serializer</span>
<span class="doccomment">//! {</span>
<span class="doccomment">//! #path(self.value, s)</span>
<span class="doccomment">//! }</span>
<span class="doccomment">//! }</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! SerializeWith {</span>
<span class="doccomment">//! value: #value,</span>
<span class="doccomment">//! phantom: ::std::marker::PhantomData::<#item_ty>,</span>
<span class="doccomment">//! }</span>
<span class="doccomment">//! };</span>
<span class="doccomment">//! ```</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! Repetition is done using `#(...)*` or `#(...),*` very similar to `macro_rules!`:</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! - `#(#var)*` - no separators</span>
<span class="doccomment">//! - `#(#var),*` - the character before the asterisk is used as a separator</span>
<span class="doccomment">//! - `#( struct #var; )*` - the repetition can contain other things</span>
<span class="doccomment">//! - `#( #k => println!("{}", #v), )*` - even multiple interpolations</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! The return type of `quote!` is `quote::Tokens`. Tokens can be interpolated into</span>
<span class="doccomment">//! other quotes:</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! ```text</span>
<span class="doccomment">//! let t = quote! { /* ... */ };</span>
<span class="doccomment">//! return quote! { /* ... */ #t /* ... */ };</span>
<span class="doccomment">//! ```</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! Call `to_string()` or `as_str()` on a Tokens to get a `String` or `&str` of Rust</span>
<span class="doccomment">//! code.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! The `quote!` macro relies on deep recursion so some large invocations may fail</span>
<span class="doccomment">//! with "recursion limit reached" when you compile. If it fails, bump up the</span>
<span class="doccomment">//! recursion limit by adding `#![recursion_limit = "128"]` to your crate. An even</span>
<span class="doccomment">//! higher limit may be necessary for especially large invocations.</span>
<span class="kw">mod</span> <span class="ident">tokens</span>;
<span class="kw">pub</span> <span class="kw">use</span> <span class="ident">tokens</span>::<span class="ident">Tokens</span>;
<span class="kw">mod</span> <span class="ident">to_tokens</span>;
<span class="kw">pub</span> <span class="kw">use</span> <span class="ident">to_tokens</span>::{<span class="ident">ToTokens</span>, <span class="ident">ByteStr</span>, <span class="ident">Hex</span>};
<span class="kw">mod</span> <span class="ident">ident</span>;
<span class="kw">pub</span> <span class="kw">use</span> <span class="ident">ident</span>::<span class="ident">Ident</span>;
<span class="doccomment">/// The whole point.</span>
<span class="attribute">#[<span class="ident">macro_export</span>]</span>
<span class="macro">macro_rules</span><span class="macro">!</span> <span class="ident">quote</span> {
() <span class="op">=></span> {
<span class="macro-nonterminal">$</span><span class="kw">crate</span>::<span class="macro-nonterminal">Tokens</span>::<span class="ident">new</span>()
};
($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>:<span class="ident">tt</span>)<span class="op">+</span>) <span class="op">=></span> {
{
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">_s</span> <span class="op">=</span> <span class="macro-nonterminal">$</span><span class="kw">crate</span>::<span class="macro-nonterminal">Tokens</span>::<span class="ident">new</span>();
<span class="macro">quote_each_token</span><span class="macro">!</span>(<span class="ident">_s</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>)<span class="kw-2">*</span>);
<span class="ident">_s</span>
}
};
}
<span class="comment">// Extract the names of all #metavariables and pass them to the $finish macro.</span>
<span class="comment">//</span>
<span class="comment">// in: pounded_var_names!(then () a #b c #( #d )* #e)</span>
<span class="comment">// out: then!(() b d e)</span>
<span class="attribute">#[<span class="ident">macro_export</span>]</span>
<span class="attribute">#[<span class="ident">doc</span>(<span class="ident">hidden</span>)]</span>
<span class="macro">macro_rules</span><span class="macro">!</span> <span class="ident">pounded_var_names</span> {
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">finish</span>:<span class="ident">ident</span> ($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">found</span>:<span class="ident">ident</span>)<span class="kw-2">*</span>) # ( $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">inner</span>:<span class="ident">tt</span>)<span class="op">*</span> ) $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>:<span class="ident">tt</span>)<span class="kw-2">*</span>) <span class="op">=></span> {
<span class="macro">pounded_var_names</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">finish</span> ($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">found</span>)<span class="kw-2">*</span>) $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">inner</span>)<span class="op">*</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>)<span class="kw-2">*</span>)
};
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">finish</span>:<span class="ident">ident</span> ($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">found</span>:<span class="ident">ident</span>)<span class="kw-2">*</span>) # [ $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">inner</span>:<span class="ident">tt</span>)<span class="op">*</span> ] $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>:<span class="ident">tt</span>)<span class="kw-2">*</span>) <span class="op">=></span> {
<span class="macro">pounded_var_names</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">finish</span> ($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">found</span>)<span class="kw-2">*</span>) $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">inner</span>)<span class="op">*</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>)<span class="kw-2">*</span>)
};
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">finish</span>:<span class="ident">ident</span> ($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">found</span>:<span class="ident">ident</span>)<span class="kw-2">*</span>) # { $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">inner</span>:<span class="ident">tt</span>)<span class="op">*</span> } $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>:<span class="ident">tt</span>)<span class="kw-2">*</span>) <span class="op">=></span> {
<span class="macro">pounded_var_names</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">finish</span> ($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">found</span>)<span class="kw-2">*</span>) $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">inner</span>)<span class="op">*</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>)<span class="kw-2">*</span>)
};
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">finish</span>:<span class="ident">ident</span> ($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">found</span>:<span class="ident">ident</span>)<span class="kw-2">*</span>) # <span class="macro-nonterminal">$</span><span class="macro-nonterminal">first</span>:<span class="ident">ident</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>:<span class="ident">tt</span>)<span class="kw-2">*</span>) <span class="op">=></span> {
<span class="macro">pounded_var_names</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">finish</span> ($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">found</span>)<span class="op">*</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">first</span>) $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>)<span class="kw-2">*</span>)
};
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">finish</span>:<span class="ident">ident</span> ($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">found</span>:<span class="ident">ident</span>)<span class="kw-2">*</span>) ( $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">inner</span>:<span class="ident">tt</span>)<span class="op">*</span> ) $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>:<span class="ident">tt</span>)<span class="kw-2">*</span>) <span class="op">=></span> {
<span class="macro">pounded_var_names</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">finish</span> ($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">found</span>)<span class="kw-2">*</span>) $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">inner</span>)<span class="op">*</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>)<span class="kw-2">*</span>)
};
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">finish</span>:<span class="ident">ident</span> ($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">found</span>:<span class="ident">ident</span>)<span class="kw-2">*</span>) [ $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">inner</span>:<span class="ident">tt</span>)<span class="op">*</span> ] $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>:<span class="ident">tt</span>)<span class="kw-2">*</span>) <span class="op">=></span> {
<span class="macro">pounded_var_names</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">finish</span> ($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">found</span>)<span class="kw-2">*</span>) $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">inner</span>)<span class="op">*</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>)<span class="kw-2">*</span>)
};
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">finish</span>:<span class="ident">ident</span> ($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">found</span>:<span class="ident">ident</span>)<span class="kw-2">*</span>) { $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">inner</span>:<span class="ident">tt</span>)<span class="op">*</span> } $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>:<span class="ident">tt</span>)<span class="kw-2">*</span>) <span class="op">=></span> {
<span class="macro">pounded_var_names</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">finish</span> ($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">found</span>)<span class="kw-2">*</span>) $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">inner</span>)<span class="op">*</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>)<span class="kw-2">*</span>)
};
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">finish</span>:<span class="ident">ident</span> ($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">found</span>:<span class="ident">ident</span>)<span class="kw-2">*</span>) <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ignore</span>:<span class="ident">tt</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>:<span class="ident">tt</span>)<span class="kw-2">*</span>) <span class="op">=></span> {
<span class="macro">pounded_var_names</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">finish</span> ($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">found</span>)<span class="kw-2">*</span>) $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>)<span class="kw-2">*</span>)
};
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">finish</span>:<span class="ident">ident</span> ($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">found</span>:<span class="ident">ident</span>)<span class="kw-2">*</span>)) <span class="op">=></span> {
<span class="macro-nonterminal">$</span><span class="macro-nonterminal">finish</span><span class="op">!</span>(() $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">found</span>)<span class="kw-2">*</span>)
};
}
<span class="comment">// in: nested_tuples_pat!(() a b c d e)</span>
<span class="comment">// out: ((((a b) c) d) e)</span>
<span class="comment">//</span>
<span class="comment">// in: nested_tuples_pat!(() a)</span>
<span class="comment">// out: a</span>
<span class="attribute">#[<span class="ident">macro_export</span>]</span>
<span class="attribute">#[<span class="ident">doc</span>(<span class="ident">hidden</span>)]</span>
<span class="macro">macro_rules</span><span class="macro">!</span> <span class="ident">nested_tuples_pat</span> {
(()) <span class="op">=></span> {
<span class="kw-2">&</span>()
};
(() <span class="macro-nonterminal">$</span><span class="macro-nonterminal">first</span>:<span class="ident">ident</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>:<span class="ident">ident</span>)<span class="kw-2">*</span>) <span class="op">=></span> {
<span class="macro">nested_tuples_pat</span><span class="macro">!</span>((<span class="macro-nonterminal">$</span><span class="macro-nonterminal">first</span>) $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>)<span class="kw-2">*</span>)
};
((<span class="macro-nonterminal">$</span><span class="macro-nonterminal">pat</span>:<span class="ident">pat</span>) <span class="macro-nonterminal">$</span><span class="macro-nonterminal">first</span>:<span class="ident">ident</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>:<span class="ident">ident</span>)<span class="kw-2">*</span>) <span class="op">=></span> {
<span class="macro">nested_tuples_pat</span><span class="macro">!</span>(((<span class="macro-nonterminal">$</span><span class="macro-nonterminal">pat</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">first</span>)) $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>)<span class="kw-2">*</span>)
};
((<span class="macro-nonterminal">$</span><span class="macro-nonterminal">done</span>:<span class="ident">pat</span>)) <span class="op">=></span> {
<span class="macro-nonterminal">$</span><span class="macro-nonterminal">done</span>
};
}
<span class="comment">// in: multi_zip_expr!(() a b c d e)</span>
<span class="comment">// out: a.into_iter().zip(b).zip(c).zip(d).zip(e)</span>
<span class="comment">//</span>
<span class="comment">// in: multi_zip_iter!(() a)</span>
<span class="comment">// out: a</span>
<span class="attribute">#[<span class="ident">macro_export</span>]</span>
<span class="attribute">#[<span class="ident">doc</span>(<span class="ident">hidden</span>)]</span>
<span class="macro">macro_rules</span><span class="macro">!</span> <span class="ident">multi_zip_expr</span> {
(()) <span class="op">=></span> {
<span class="kw-2">&</span>[]
};
(() <span class="macro-nonterminal">$</span><span class="macro-nonterminal">single</span>:<span class="ident">ident</span>) <span class="op">=></span> {
<span class="macro-nonterminal">$</span><span class="macro-nonterminal">single</span>
};
(() <span class="macro-nonterminal">$</span><span class="macro-nonterminal">first</span>:<span class="ident">ident</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>:<span class="ident">ident</span>)<span class="kw-2">*</span>) <span class="op">=></span> {
<span class="macro">multi_zip_expr</span><span class="macro">!</span>((<span class="macro-nonterminal">$</span><span class="macro-nonterminal">first</span>.<span class="ident">into_iter</span>()) $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>)<span class="kw-2">*</span>)
};
((<span class="macro-nonterminal">$</span><span class="macro-nonterminal">zips</span>:<span class="ident">expr</span>) <span class="macro-nonterminal">$</span><span class="macro-nonterminal">first</span>:<span class="ident">ident</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>:<span class="ident">ident</span>)<span class="kw-2">*</span>) <span class="op">=></span> {
<span class="macro">multi_zip_expr</span><span class="macro">!</span>((<span class="macro-nonterminal">$</span><span class="macro-nonterminal">zips</span>.<span class="ident">zip</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">first</span>)) $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>)<span class="kw-2">*</span>)
};
((<span class="macro-nonterminal">$</span><span class="macro-nonterminal">done</span>:<span class="ident">expr</span>)) <span class="op">=></span> {
<span class="macro-nonterminal">$</span><span class="macro-nonterminal">done</span>
};
}
<span class="attribute">#[<span class="ident">macro_export</span>]</span>
<span class="attribute">#[<span class="ident">doc</span>(<span class="ident">hidden</span>)]</span>
<span class="macro">macro_rules</span><span class="macro">!</span> <span class="ident">quote_each_token</span> {
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span>:<span class="ident">ident</span>) <span class="op">=></span> {};
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span>:<span class="ident">ident</span> # <span class="op">!</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>:<span class="ident">tt</span>)<span class="kw-2">*</span>) <span class="op">=></span> {
<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span>.<span class="ident">append</span>(<span class="string">"#"</span>);
<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span>.<span class="ident">append</span>(<span class="string">"!"</span>);
<span class="macro">quote_each_token</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>)<span class="kw-2">*</span>);
};
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span>:<span class="ident">ident</span> # ( $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">inner</span>:<span class="ident">tt</span>)<span class="op">*</span> ) <span class="op">*</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>:<span class="ident">tt</span>)<span class="kw-2">*</span>) <span class="op">=></span> {
<span class="kw">for</span> <span class="macro">pounded_var_names</span><span class="macro">!</span>(<span class="ident">nested_tuples_pat</span> () $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">inner</span>)<span class="kw-2">*</span>)
<span class="kw">in</span> <span class="macro">pounded_var_names</span><span class="macro">!</span>(<span class="ident">multi_zip_expr</span> () $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">inner</span>)<span class="kw-2">*</span>) {
<span class="macro">quote_each_token</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">inner</span>)<span class="kw-2">*</span>);
}
<span class="macro">quote_each_token</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>)<span class="kw-2">*</span>);
};
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span>:<span class="ident">ident</span> # ( $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">inner</span>:<span class="ident">tt</span>)<span class="op">*</span> ) <span class="macro-nonterminal">$</span><span class="macro-nonterminal">sep</span>:<span class="ident">tt</span> <span class="op">*</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>:<span class="ident">tt</span>)<span class="kw-2">*</span>) <span class="op">=></span> {
<span class="kw">for</span> (<span class="ident">_i</span>, <span class="macro">pounded_var_names</span><span class="macro">!</span>(<span class="ident">nested_tuples_pat</span> () $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">inner</span>)<span class="kw-2">*</span>))
<span class="kw">in</span> <span class="macro">pounded_var_names</span><span class="macro">!</span>(<span class="ident">multi_zip_expr</span> () $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">inner</span>)<span class="kw-2">*</span>).<span class="ident">into_iter</span>().<span class="ident">enumerate</span>() {
<span class="kw">if</span> <span class="ident">_i</span> <span class="op">></span> <span class="number">0</span> {
<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span>.<span class="ident">append</span>(<span class="macro">stringify</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">sep</span>));
}
<span class="macro">quote_each_token</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">inner</span>)<span class="kw-2">*</span>);
}
<span class="macro">quote_each_token</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>)<span class="kw-2">*</span>);
};
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span>:<span class="ident">ident</span> # [ $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">inner</span>:<span class="ident">tt</span>)<span class="op">*</span> ] $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>:<span class="ident">tt</span>)<span class="kw-2">*</span>) <span class="op">=></span> {
<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span>.<span class="ident">append</span>(<span class="string">"#"</span>);
<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span>.<span class="ident">append</span>(<span class="string">"["</span>);
<span class="macro">quote_each_token</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">inner</span>)<span class="kw-2">*</span>);
<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span>.<span class="ident">append</span>(<span class="string">"]"</span>);
<span class="macro">quote_each_token</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>)<span class="kw-2">*</span>);
};
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span>:<span class="ident">ident</span> # <span class="macro-nonterminal">$</span><span class="macro-nonterminal">first</span>:<span class="ident">ident</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>:<span class="ident">tt</span>)<span class="kw-2">*</span>) <span class="op">=></span> {
<span class="macro-nonterminal">$</span><span class="kw">crate</span>::<span class="macro-nonterminal">ToTokens</span>::<span class="ident">to_tokens</span>(<span class="kw-2">&</span><span class="macro-nonterminal">$</span><span class="macro-nonterminal">first</span>, <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span>);
<span class="macro">quote_each_token</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>)<span class="kw-2">*</span>);
};
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span>:<span class="ident">ident</span> ( $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">first</span>:<span class="ident">tt</span>)<span class="op">*</span> ) $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>:<span class="ident">tt</span>)<span class="kw-2">*</span>) <span class="op">=></span> {
<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span>.<span class="ident">append</span>(<span class="string">"("</span>);
<span class="macro">quote_each_token</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">first</span>)<span class="kw-2">*</span>);
<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span>.<span class="ident">append</span>(<span class="string">")"</span>);
<span class="macro">quote_each_token</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>)<span class="kw-2">*</span>);
};
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span>:<span class="ident">ident</span> [ $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">first</span>:<span class="ident">tt</span>)<span class="op">*</span> ] $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>:<span class="ident">tt</span>)<span class="kw-2">*</span>) <span class="op">=></span> {
<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span>.<span class="ident">append</span>(<span class="string">"["</span>);
<span class="macro">quote_each_token</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">first</span>)<span class="kw-2">*</span>);
<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span>.<span class="ident">append</span>(<span class="string">"]"</span>);
<span class="macro">quote_each_token</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>)<span class="kw-2">*</span>);
};
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span>:<span class="ident">ident</span> { $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">first</span>:<span class="ident">tt</span>)<span class="op">*</span> } $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>:<span class="ident">tt</span>)<span class="kw-2">*</span>) <span class="op">=></span> {
<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span>.<span class="ident">append</span>(<span class="string">"{"</span>);
<span class="macro">quote_each_token</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">first</span>)<span class="kw-2">*</span>);
<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span>.<span class="ident">append</span>(<span class="string">"}"</span>);
<span class="macro">quote_each_token</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>)<span class="kw-2">*</span>);
};
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span>:<span class="ident">ident</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">first</span>:<span class="ident">tt</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>:<span class="ident">tt</span>)<span class="kw-2">*</span>) <span class="op">=></span> {
<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span>.<span class="ident">append</span>(<span class="macro">stringify</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">first</span>));
<span class="macro">quote_each_token</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tokens</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>)<span class="kw-2">*</span>);
};
}
</pre>
</section>
<section id='search' class="content hidden"></section>
<section class="footer"></section>
<aside id="help" class="hidden">
<div>
<h1 class="hidden">Help</h1>
<div class="shortcuts">
<h2>Keyboard Shortcuts</h2>
<dl>
<dt><kbd>?</kbd></dt>
<dd>Show this help dialog</dd>
<dt><kbd>S</kbd></dt>
<dd>Focus the search field</dd>
<dt><kbd>↑</kbd></dt>
<dd>Move up in search results</dd>
<dt><kbd>↓</kbd></dt>
<dd>Move down in search results</dd>
<dt><kbd>↹</kbd></dt>
<dd>Switch tab</dd>
<dt><kbd>⏎</kbd></dt>
<dd>Go to active search result</dd>
<dt><kbd>+</kbd></dt>
<dd>Expand all sections</dd>
<dt><kbd>-</kbd></dt>
<dd>Collapse all sections</dd>
</dl>
</div>
<div class="infos">
<h2>Search Tricks</h2>
<p>
Prefix searches with a type followed by a colon (e.g.
<code>fn:</code>) to restrict the search to a given type.
</p>
<p>
Accepted types are: <code>fn</code>, <code>mod</code>,
<code>struct</code>, <code>enum</code>,
<code>trait</code>, <code>type</code>, <code>macro</code>,
and <code>const</code>.
</p>
<p>
Search functions by type signature (e.g.
<code>vec -> usize</code> or <code>* -> vec</code>)
</p>
</div>
</div>
</aside>
<script>
window.rootPath = "../../";
window.currentCrate = "quote";
</script>
<script src="../../main.js"></script>
<script defer src="../../search-index.js"></script>
</body>
</html>